What is the #1 difference between mechanical and electromagnetic waves?

Which of the following represents an upside-down image? o a. +doo b. -doo c. +mo d.-m

If vx = 7.00 units and vy = -7.60 units, determine the magnitude of v⃗ . determine the direction of v⃗ .

You hang a book bag on a spring scale and place the bag on a platform scale so that the platform scale reads 23.7n and the spring scale reads 13.8n. what is the magnitude of the force that earth exerts on the bag?